Siloxane compositions

Abstract

The invention relates to siloxane compositions containing a mixing component that is based on cashew nut shell liquid—CNSL.

The invention claimed is: 
     
       1. A siloxane composition comprising:
 a siloxane or a siloxane copolymer; and 
 at least one admixed component selected from the group consisting of cashew nut shell oil, cardanol, cardolite, cardol, methylcardol, anacardic acid, oxidation products of cashew nut shell oil, and residues from a distillation of the cashew nut shell oil, and mixtures thereof; 
 wherein the mass ratio between the admixed component and the siloxane or siloxane copolymer is between 0.1 and 98 percent by weight. 
 
     
     
       2. A process of preparing polyurethane foams and/or polyisocyanurate foams and/or polyurea foams, the process comprising:
 adding the admixed component of  claim 1  to a siloxane or a siloxane copolymer. 
 
     
     
       3. The process according to  claim 2 ;
 wherein the siloxane or siloxane copolymer, and the admixed component, are free of nonylphenol alkoxylates or mineral oil-based admixed components. 
 
     
     
       4. The process according to  claim 2 ;
 wherein the at least one admixed component is an oxidation product of cashew nut shell oil. 
 
     
     
       5. The process according to  claim 2 ;
 wherein an auxiliary or a further admixture is used. 
 
     
     
       6. The process according to  claim 5 ;
 wherein the further admixture is selected from the group consisting of flameproofing agents, dyes, pigment preparations, biocides, and antistatic additives. 
 
     
     
       7. A polyurethane foam and/or a polyisocyanurate foam and/or a polyurea foam prepared by the process of  claim 2 . 
     
     
       8. The foam according to  claim 7 ;
 wherein the siloxane or siloxane copolymer, and admixed component, are free of nonylphenol alkoxylates or mineral oil-based admixed components. 
 
     
     
       9. The composition according to  claim 1 ;
 wherein the mass ratio between the admixed component and the siloxane or siloxane copolymer is between 0.3 and 95 percent by weight. 
 
     
     
       10. The siloxane composition according to  claim 1 , further comprising:
 auxiliaries or admixtures. 
 
     
     
       11. A polyurethane foam and/or a polyisocyanurate foam and/or a polyurea foam, made from the siloxane composition of  claim 1 . 
     
     
       12. The foam according to  claim 11 ;
 wherein the siloxane or siloxane copolymer, and admixed component, are free of nonylphenol alkoxylates or mineral oil-based admixed components. 
 
     
     
       13. A rigid polyurethane foam and/or a rigid polyisocyanurate foam and/or a rigid polyurea foam, made from a siloxane composition comprising:
 a siloxane or a siloxane copolymer; and 
 an admixed component selected from the group consisting of cashew nut shell oil, cardanol, cardolite, cardol, methykardol, anacardic acid, alkoxylates of cashew nut shell oil, oxidation products of cashew nut shell oil, and a residue from a distillation of the cashew nut shell oil; 
 wherein the mass ratio between the admixed component and the siloxane or siloxane copolymer is between 0.1 and 98 percent by weight. 
 
     
     
       14. The rigid foam according to  claim 13 ;
 wherein the siloxane or siloxane copolymer is selected from the groups consisting of polyethersiloxane and polydimethylsiloxane. 
 
     
     
       15. The rigid foam according to  claim 13 ;
 wherein the siloxane or siloxane copolymer is a polyethersiloxane with the formula:
   (CH 3 ) 3 —Si—O—(Si(CH 3 ) 2 —O) x —(Si(CH 3 )(R)O) y —Si(CH 3 ) 3 ;
 
 
 
       where:
 R″ is H, (CH 2 ) CH 3 , or C(O)CH 3 ; 
 x+y+2=60 to 130; 
 x/y=5 to 14 
 z=0 to 4; and 
 a+b=10 to 18. 
 
     
     
       16. The rigid foam according to  claim 15 ;
 wherein: 
 x+y+2=67.2; 
 x/y=7.2; and 
 a+b=12. 
 
     
     
       17. The rigid foam according to  claim 13 ;
 wherein the siloxane or siloxane copolymer is a polyethersiloxane with the formula:
   (CH 3 ) 3 —Si—O—(Si(CH 3 ) 2 —O) x —(Si(CH 3 )(R)O) y —Si(CH 3 ) 3 ;
 
 
 
       where:
 R═(CH 2 ) 3 —O—(—CH 2 —CH 2 —O) a —(CH 2 —CH(CH 3 )—O) b —R″; 
 R″ is H, (CH 2 ) z CH 3 , or C(O)CH 3 ; 
 x=70; 
 y=4; 
 z=0 to 4; and 
 a+b=10 to 18; 
 wherein the polyethersiloxane has two polyethers, with:
 37 equivalent % of polyether 1, where a is 36, b is 38, and R″ is methyl; and 
 63 equivalent % of polyether 2, where a is 12, b is 0, and R″ is methyl.